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Nasty Gnasher
10-23-2005, 13:29
No no , iotsw nothing official, its just a question by me (before somebody's hearts slashes through their chest on the sight of "blu--ray "Confusion" :lol: )

So,
I was going through this article on Cnet and it compares the speeds of Blu-ray and HDDVD as
54.0 Mbps to 36.55 Mbps ...

I know the blu0ray FAQ mentions 54.0 as 1.5 x ....
but the section over at the Blu-ray forums describes:

Data transfer rate (movie application) for blu-ray as 54.0 Mbps and for HDDVD 36.55Mbps ...

read the faq HERE (http://www.blu-ray.com/faq/)
Here's the article from Cnet
http://asia.cnet.com/reviews/home_av/others/0,39037627,39281437,00.htm

I mean, how come for blu-ray , the data transfer rate for movie applications is more than that required for HDDVD ...

PS : just so this topic doesnt get locked .... will this have any influence on the PS3 ??? :wink:

arfi-gorgona-O
10-23-2005, 14:47
Maybe cause the blu-ray use less compression i guess,i see many people saying HD movies and they think that HD is only the resolution...but they totaly forget about the compression.Maybe im wrong if i am someone correct me.

Steroyd
10-23-2005, 16:33
compression is reliant on CPU work, not data transfer speed.

I havn't a clue, i mean i'm reading 54Mbps everywhere, but i think that's standard forMovie and game applications.

So a 1X drive on a PS3 would probably be at 54Mbps.

Schmeh
10-23-2005, 17:19
compression is reliant on CPU work, not data transfer speed.

I havn't a clue, i mean i'm reading 54Mbps everywhere, but i think that's standard forMovie and game applications.

So a 1X drive on a PS3 would probably be at 54Mbps.

No, a 1x Blu-ray dive is 36Mbps not matter what it is used for. The 54Mbps refers to the transfer rate at which Blu-ray movies will require. So to play a Blu-ray movie you must have a 2x drive since 1x would be to slow.

http://www.blu-ray.com/faq/#3.2

As for why the movies require 54mbps, I don't know, that is an interesting question.

Nasty Gnasher
10-23-2005, 18:02
compression is reliant on CPU work, not data transfer speed.

I havn't a clue, i mean i'm reading 54Mbps everywhere, but i think that's standard forMovie and game applications.

So a 1X drive on a PS3 would probably be at 54Mbps.

no no , 54Mbps would make it 1.5x ... although i do hope its nothing less than 2x.

knowitman
10-23-2005, 22:03
If the movies use a different compression scheme the movie size could be larger. That means more data would have to be read at a time. That means higher read rates.

I know that Blu-Ray and HDDVD all support the same video codecs so does that mean Blu-Ray movies will be higher quality?

arfi-gorgona-O
10-23-2005, 22:48
knowitman

Exactly,thats what i said earlier,the compression inside blu-ray is smaller,when people say HD they mean the resolution but not the compression...with a 200gb blu-ray you can play HD (assuming they use it for 1 movie only)but you expect to have a better picture quality,than a blu-ray with 25gb.

oldegmr
10-24-2005, 00:56
From what I understand, there really isn't such a thing as a 1x speed Blu-ray drive since the specs for movies require a higher speed for frame-buffering and error correction, ect. I don't think it would be going out on a limb too bad to believe the PS3 would have at least a 2x drive for this reason.

The Chocobo Kid
10-24-2005, 01:36
blue-ray is built to be way way better then HDDVD so no worry no matter how you look at it.

exodus7
10-24-2005, 03:04
blue-ray is built to be way way better then HDDVD so no worry no matter how you look at it.

The same way that HD DVD is built to be cheaper then Blu Ray.

arfi-gorgona-O
10-24-2005, 03:14
But if they need 1,5 to play HD a movie,the next step is 3x...at least i think so.

Sufi
10-24-2005, 03:25
blue-ray is built to be way way better then HDDVD so no worry no matter how you look at it.

The same way that HD DVD is built to be cheaper then Blu Ray.

Cheaper or not, what really matters is which format gets more support, and so far it's Blu-Ray so it doesn't matter if it's a little cheaper than Blu-Ray. You will be buying Blu-Ray discs eventually.

The_Only
01-15-2008, 10:50
Live on site.

Source: http://feeds.ign.com/~r/ignfeeds/all/~3 ... 537p1.html (http://feeds.ign.com/~r/ignfeeds/all/~3/216902717/845537p1.html)